Zeytin Karasuyunun Elektrokoagulasyon Ön Arıtımlı Tek Fazlı Anaerobik Arıtımı

Yıl 2018, , 210 - 217, 01.04.2018

Canan Can Yarımtepe , Nilgün Ayman Öz , Orhan İnce

https://doi.org/10.16984/saufenbilder.299127

Öz

Bu çalışma kapsamında
Çanakkale ili ve çevresi için önemli bir çevre sorunu teşkil eden zeytin
karasuyunun tek fazlı ardışık kesikli anaerobik reaktörler ile arıtılabilirliği
elektrokoagulasyon ön arıtımı kullanılarak incelenmiştir. Elektrokoagulasyon ön
işlemi sayesinde, karasudaki kirletici konsantrasyonları, askıda katı madde miktarı
başta olmak üzere çeşitli kirletici parametreleri bazında önemli bir giderim sağlanmıştır.
Ön arıtılmış karasu numuneleri tek fazlı anaerobik reaktöre beslenerek,
anaerobik arıtım verimliliği; çKOİ giderimi, biyogaz oluşumu ve metan içeriği
açısından incelenmiştir.  Hidrolik
bekletme süresi 1 gün; çamur bekletme süresi 20 gün; organik yükleme oranı 1 gr KOİ/gr UAKM-gün olarak 30 gün boyunca
işletilen ardışık kesikli anaerobik reaktörde; ortalama %70 organik madde
giderimi elde edilmiştir. Eş zamanlı olarak günlük ortalama %80 metan içerikli
1000 mL biyogaz oluşumu sağlanmıştır. İşletme süresince metan üretim
hızı ortalama 0,27 mL CH₄/gr KOİgiderilen ve kümülatif metan gazı
oluşumu 19981 mL olarak tespit edilmiştir. Ön arıtımlı tek fazlı anaerobik
arıtım ile; karasuyun organik madde içeriğinde büyük oranda giderim elde
edilmiş, eş zamanlı olarak da temiz bir enerji kaynağı olan metan içeriği
yüksek biyogaz eldesi sağlanmıştır. Bu çalışmanın bulguları; elektrokoagulasyon
gibi kısa süreli bir ön arıtım ile; karasuyun tek fazlı anaerobik reaktöre
doğrudan beslenebildiğini aynı zamanda bu sistemlerden yüksek verimi
alınabileceğini göstermektedir.

Anahtar Kelimeler

Zeytin karasuyu, Ön arıtım, Elektrokoagulasyon, Anaerobik arıtım, KOİ giderimi, Biyogaz oluşumu

Single phase Anaerobic treatment of Olive Mill Wastewater pretreated by Electrocoagulation

Öz

In this study, anaerobic
treatability of olive mill wastewater (OMW) which is an important environmental
problem for Canakkale province, was investigated by using electrocoagulation
pretreatment. With electrocoagulation pretreatment; significant pollutant
removal efficiencies, mainly in terms of suspended solids, has been provided.
Pretreated OMW samples were fed to single phase anaerobic reactor and anaerobic
treatability has been investigated in terms of sCOD removal, biogas production
and methane yield. In sequencing batch anaerobic reactor which was operated
with 1 day as HRT, 20 days as SRT and 1 gr COD/gr VSS-day as OLR; organic
matter removal efficiency was determined as about 70% for 30 days. Daily biogas
production and methane yield were determined as 1000 mL and 80%, respectively.
During the operation; while 19981 mL methane was produced, methane production
rate was determined as 0.27 mL CH4/gr CODremoved. With electrocoagulation
assisted single phase anaerobic treatment; while organic matter concentration
of OMW has been significantly removed, 
biogas with high methane content has been produced simultaneously.
According to results of this study,  it
has been stated that, with a preatment in short duration like
electrocoagulation, pretreated olive mill wastewater could be fed directly to
anaerobic reactor and high efficiencies could be obtained in anaerobic
reactors.

Anahtar Kelimeler

Olive mill wastewater, pretreatment, electrocoagulation, anaerobic treatment, cod removal, biogas production

Kaynakça

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